yahoo-eng-team team mailing list archive

[Abu Shohel Ahmed <1300274@xxxxxxxxxxxxxxxxxx>]

Public bug reported:

In V3.0 API,  we can chain authentication methods. An attacker can place
the same authentication method multiple times in the methods filed. This
will result in the same authentication method checking over and over
(for loop in code).  Using this, an attacker can achieve some sorts of
Denial of Service.   The methods field is not properly sanitized.

{
   "auth":{
      "identity":{
         "methods":[
            "password",
            "password",
             "password",
             "password",
             "password" 
         ],
        "password":{
            "user":{
               "domain":{
                  "id":"default"
               },
               "name":"demo",
               "password":"stack"
            }
         }
      }
   }
}

** Affects: keystone
     Importance: Undecided
         Status: New


** Tags: security

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https://bugs.launchpad.net/bugs/1300274

Title:
  V3 Authentication Chaining - uniqueness of auth method names

Status in OpenStack Identity (Keystone):
  New

Bug description:
  In V3.0 API,  we can chain authentication methods. An attacker can
  place the same authentication method multiple times in the methods
  filed. This will result in the same authentication method checking
  over and over (for loop in code).  Using this, an attacker can achieve
  some sorts of Denial of Service.   The methods field is not properly
  sanitized.

  {
     "auth":{
        "identity":{
           "methods":[
              "password",
              "password",
               "password",
               "password",
               "password" 
           ],
          "password":{
              "user":{
                 "domain":{
                    "id":"default"
                 },
                 "name":"demo",
                 "password":"stack"
              }
           }
        }
     }
  }

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